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    • 10. 发明授权
    • Compositions and process for the oilproofing and waterproofing treatment
of construction materials
    • 建筑材料防油和防水处理的组成和工艺
    • US4478975A
    • 1984-10-23
    • US572026
    • 1984-01-19
    • Andre L. DessaintMarie-Jose Lina
    • Andre L. DessaintMarie-Jose Lina
    • C09K3/00C04B41/48C08G18/62C08G77/00C08G77/32C09D175/04C09K3/18C08G18/46
    • C04B41/4842C08G18/6279C09K3/18
    • The invention concerns the oilproofing and waterproofing treatment of construction materials by applying to them a composition which comprises by weight:(A) from 0.1 to 25% of a fluorinated copolymer formed from(1) 5 to 70% of a fluorinated ester of the formula: ##STR1## in which Rf represents a perfluoro-alkyl radical, Q represents an oxygen or sulfur atom, W represent a bivalent linkage, one of the symbols R represents a hydrogen atom and the other a hydrogen atom or an alkyl radical,(2) 4 to 50% of a monomer of the formula: ##STR2## in which R' represent a hydrogen atom or an alkyl radical and R' represents an alkylene radical and(3) 0 to 91% of any other monomers'(B) from 2 to 25% of a polyisocyanate or isocyanate prepolymer;(C) from 0.1 to 10% of a catalyst; and(D) one or more diluting solvents to make up to 100%. This composition, which confers waters repellency, oil repellency, anti-graffiti and anti-billposting properties, stable towards ageing and weathering on the materials treated, may also be used as a mold-removing agent for pieces of concrete cast in a concrete mold.
    • 本发明涉及对施工材料的防油和防水处理,其组合物包含:(A)0.1至25%的由(1)5至70%的式(1)的氟化酯形成的含氟共聚物 :其中R f表示全氟烷基,Q表示氧或硫原子,W表示二价键,其中一个符号R表示氢原子,另一个表示氢原子或烷基 ,(2)4至50%的下式的单体:其中R'表示氢原子或烷基,R'表示亚烷基,(3)0〜91%的任何 其它单体“(B)2至25%的多异氰酸酯或异氰酸酯预聚物; (C)0.1〜10%的催化剂; 和(D)一种或多种稀释溶剂以达到100%。 赋予防水性,防油性,防涂鸦性和防突起性能的这种组合物也可以用作在混凝土模具中浇注的混凝土的脱模剂。